Não informado. Livestock Meat Wool. U.S. Department of Agriculture, Livestock, Poutry, Grain and Seed Division.
Chicago-referens (17:e uppl.)Não informado. Livestock Meat Wool. Washington: U.S. Department of Agriculture, Livestock, Poutry, Grain and Seed Division.
MLA-referens (8:e uppl.)Não informado. Livestock Meat Wool. U.S. Department of Agriculture, Livestock, Poutry, Grain and Seed Division.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.